fix: remove unused boxclass of Error.vue

[leo-anderson-x]

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PR Type

• Bugfix
• Feature
• Refactoring

Context

• Closes Offline detected  #5184

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[kodabot]

SUCCESS @leo-anderson-x PR for issue #5184 which is assigned to you. Please wait for review and don't hesitate to grab another issue in the meantime!

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[roiLeo]

Yup, that's the fix I was looking for

✅ code lgtm

[vikiival]

pay 10 usd

[yangwao]

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[codeclimate]

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